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M9480121.TXT
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1994-08-09
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Document 0121
DOCN M9480121
TI DNA found in human immunodeficiency virus type 1 particles may not be
required for infectivity.
DT 9410
AU Arts EJ; Mak J; Kleiman L; Wainberg MA; Lady Davis Institute, Jewish
General Hospital, Montreal,; Quebec, Canada.
SO J Gen Virol. 1994 Jul;75 ( Pt 7):1605-13. Unique Identifier : AIDSLINE
MED/94292911
AB We have studied the presence and significance of retroviral
genome-derived DNA in the core of human immunodeficiency virus (HIV)
particles produced from transfections of HXB2 expression vectors in
COS-7 cells and from HIV type 1 IIIB chronically infected H9 cells.
Viruses purified by sucrose cushion centrifugation and treated with
DNase I contained 1000-fold more viral RNA than DNA. However,
protease-defective viruses that contained only p160gag-pol had less than
100 times the amount of DNA in their cores than wild-type viruses
suggesting that the p66/p51 form of reverse transcriptase was
responsible for DNA transcription. Viruses produced by transfections in
the presence of 3'-azido-3'-deoxythymidine (AZT) contained the viral RNA
genome but only DNA of premature length because of the chain terminating
effects of AZT. However such viruses were as infections for CD4+ cells
as wild-type virus. We conclude that retrovirus-derived DNA in HIV-1
particles is not required for infection and does not play a significant
role in this process.
DE Animal Cell Line DNA, Viral/*ANALYSIS Gene Amplification Gene
Products, gag/PHYSIOLOGY *Genome, Viral Human HIV Core Protein
p24/ANALYSIS HIV-1/CHEMISTRY/*GENETICS/PHYSIOLOGY Polymerase Chain
Reaction Protein Precursors/PHYSIOLOGY Reverse
Transcriptase/PHYSIOLOGY RNA, Viral/ANALYSIS/GENETICS Support,
Non-U.S. Gov't T-Lymphocytes/CYTOLOGY Transfection Virus
Replication/DRUG EFFECTS Zidovudine/PHARMACOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).